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电化学  2014 

PP14TFSI离子液体在可充镁电池电解液的应用

DOI: 10.13208/j.electrochem.130726, PP. 128-133

Keywords: 苯酚基镁盐,N-甲基-N-丁基-哌啶-双三氟甲基磺酰胺,可充镁电池,混合溶剂,电解液

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Abstract:

制备了可充镁电池电解质苯酚基镁盐,以四氢呋喃(THF)与N-甲基-N-丁基-哌啶-双三氟甲基磺酰胺(PP14TFSI)离子液体混合物代替四氢呋喃作为该电解质的溶剂.当THF与PP14TFSI体积配比为1:1时,该苯酚基镁盐电解液镁可逆溶出性能最佳,电化学窗口宽(2.7Vvs.Mg),离子电导率高(7.77mS·cm-1).此外,热重测试表明离子液体的加入大大降低了THF溶剂的挥发性,提高了可充镁电池的安全性能.四氢呋喃+N-甲基-N-丁基-哌啶-双三氟甲基磺酰胺混合溶剂有望作为可充镁电池电解液的首选溶剂.

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